1 files changed, 133 insertions, 0 deletions
diff --git a/openbox/modkeys.c b/openbox/modkeys.c
new file mode 100644
index 00000000..4f0ddca9
--- /dev/null
+++ b/openbox/modkeys.c
@@ -0,0 +1,133 @@
+/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
+
+   modkeys.c for the Openbox window manager
+   Copyright (c) 2007        Dana Jansens
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   See the COPYING file for a copy of the GNU General Public License.
+*/
+
+#include "modkeys.h"
+#include "openbox.h"
+
+#include <X11/Xlib.h>
+
+/* These masks are constants and the modifier keys are bound to them as
+   anyone sees fit:
+        ShiftMask (1<<0), LockMask (1<<1), ControlMask (1<<2), Mod1Mask (1<<3),
+        Mod2Mask (1<<4), Mod3Mask (1<<5), Mod4Mask (1<<6), Mod5Mask (1<<7)
+*/
+#define NUM_MASKS 8
+#define ALL_MASKS 0xf /* an or'ing of all 8 keyboard masks */
+
+/* Get the bitflag for the n'th modifier mask */
+#define nth_mask(n) (1 << n)
+
+static void set_modkey_mask(guchar mask, KeySym sym);
+
+static XModifierKeymap *modmap;
+/* This is a bitmask of the different masks for each modifier key */
+static guchar modkeys_keys[OB_MODKEY_NUM_KEYS];
+
+void modkeys_startup(gboolean reconfigure)
+{
+    /* keycodes for the modifier keys which will be bound to the masks */
+    gint i, j, k;
+
+    modmap = XGetModifierMapping(ob_display);
+    g_assert(modmap->max_keypermod > 0);
+
+    /* reset the keys to not be bound to any masks */
+    for (i = 0; i < OB_MODKEY_NUM_KEYS; ++i)
+        modkeys_keys[i] = 0;
+
+    /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
+    for (i = 0; i < NUM_MASKS; ++i) {
+        /* go through each keycode that is bound to the mask */
+        for (j = 0; j < modmap->max_keypermod; ++j) {
+            KeySym sym;
+            /* get a keycode that is bound to the mask (i) */
+            KeyCode keycode = modmap->modifiermap[i*modmap->max_keypermod + j];
+            /* go through each keysym bound to the given keycode */
+            for (k = 0; ; ++k) {
+                sym = XKeycodeToKeysym(ob_display, keycode, k);
+                if (sym == NoSymbol) break;
+
+                /* bind the key to the mask (e.g. Alt_L => Mod1Mask) */
+                set_modkey_mask(nth_mask(i), sym);
+            }
+        }
+    }
+}
+
+void modkeys_shutdown(gboolean reconfigure)
+{
+    XFreeModifiermap(modmap);
+}
+
+guint modkeys_keycode_to_mask(guint keycode)
+{
+    gint i, j;
+    guint mask = 0;
+
+    if (keycode == NoSymbol) return 0;
+
+    /* go through each of the modifier masks (eg ShiftMask, CapsMask...) */
+    for (i = 0; i < NUM_MASKS; ++i) {
+        /* go through each keycode that is bound to the mask */
+        for (j = 0; j < modmap->max_keypermod; ++j) {
+            /* compare with a keycode that is bound to the mask (i) */
+            if (modmap->modifiermap[i*modmap->max_keypermod + j] == keycode)
+                mask |= nth_mask(i);
+        }
+    }
+    return mask;
+}
+
+guint modkeys_only_modifier_masks(guint mask)
+{
+    mask &= ALL_MASKS;
+    /* strip off these lock keys. they shouldn't affect key bindings */
+    mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_CAPSLOCK);
+    mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_NUMLOCK);
+    mask &= ~modkeys_key_to_mask(OB_MODKEY_KEY_SCROLLLOCK);
+    return mask;
+}
+
+guint modkeys_key_to_mask(ObModkeysKey key)
+{
+    return modkeys_keys[key];
+}
+
+static void set_modkey_mask(guchar mask, KeySym sym)
+{
+    /* find what key this is, and bind it to the mask */
+
+    if (sym == XK_Num_Lock)
+        modkeys_keys[OB_MODKEY_KEY_NUMLOCK] |= mask;
+    else if (sym == XK_Scroll_Lock)
+        modkeys_keys[OB_MODKEY_KEY_SCROLLLOCK] |= mask;
+    else if (sym == XK_Caps_Lock)
+        modkeys_keys[OB_MODKEY_KEY_CAPSLOCK] |= mask;
+    else if (sym == XK_Shift_L || sym == XK_Shift_R)
+        modkeys_keys[OB_MODKEY_KEY_SHIFT] |= mask;
+    else if (sym == XK_Control_L || sym == XK_Control_R)
+        modkeys_keys[OB_MODKEY_KEY_CONTROL] |= mask;
+    else if (sym == XK_Super_L || sym == XK_Super_R)
+        modkeys_keys[OB_MODKEY_KEY_SUPER] |= mask;
+    else if (sym == XK_Hyper_L || sym == XK_Hyper_R)
+        modkeys_keys[OB_MODKEY_KEY_HYPER] |= mask;
+    else if (sym == XK_Alt_L || sym == XK_Alt_R)
+        modkeys_keys[OB_MODKEY_KEY_ALT] |= mask;
+    else if (sym == XK_Meta_L || sym == XK_Meta_R)
+        modkeys_keys[OB_MODKEY_KEY_META] |= mask;
+}